Data replication among storage systems

Details Data replication among storage systems Data replication among storage systems

2006-12-19

2006-12-19

Pannala, Sathyanarayan (Department: 2164)

Data processing: database and file management or data structures

Database design

Data structure types

C714S006130, C711S162000

Reexamination Certificate

active

07152079

ABSTRACT:
A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.

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